Ep 3. The Unquiet Dead

In Doctor Who season 1 episode 3, titled "The Unquiet Dead," The Doctor and Rose land in Cardiff to experience the peak of the 1869 winter and visit an establishment run by Mr. Sneed. During their stay, they encounter a strange force that brings back the dead, leading them to run into the renowned writer and spiritual medium, Charles Dickens.

As they continue to investigate, a series of ghost-like apparitions, known as the Gelth, communicate with them, seeking assistance in getting to a physical form on Earth. The Gelth are the apparent cause behind the dead returning to the living, as they intend to use them as host bodies. With the help of Rose, Dickens, and Mr. Sneed, The Doctor devises a plan to stop the Gelth and send them back to their dimension.

The episode explores the themes of life after death and the use of humans as vessels for alien life forms. The iconic duo of The Doctor and Rose continues to build their relationship, as The Doctor shows Rose the importance of considering all the sides of a situation before making a decision that affects multiple lives. Dickens also provides a considerable contribution to the episode and is portrayed as a witty and intelligent individual.

"The Unquiet Dead" is a highly enjoyable episode that is well-paced and well-acted. It provides a glimpse into Victorian England, while also keeping fans of the series intrigued with its science fiction elements. It is an excellent episode for newcomers to the show, as it does not require much prior knowledge of the series to understand the plot.